Fluid-flow pump

ABSTRACT

A pump comprises a pulsation chamber from which liquid is ejected through a nozzle apparatus into a discharge chamber and a discharge pipe. A fluid inlet pipe opens into the discharge chamber beneath the nozzle apparatus and coaxially therewith to supply liquid under suction pressure. The nozzles of the nozzle apparatus are placed tangentially so that the liquid from the pulsation chamber moves with rotary motion from a center to the periphery. The pump is used in a filter apparatus by placing the pump in a body containing a filter element, the body forming the discharge chamber and the discharge pipe.

United States Patent [72] lnventors Susanna Mikhailovna Karpacheva 2 Schukinsky proezd, 2, kv. 88; Leonid Solomonovich Raginsy. Nikilinskay ulitsa, l6 korpus l kv. 29; Valerian Matveevich Muratov, Astakhovsky pereulok, 1/2, kv. 11; Vladimir Dmitrievich lvanov, 2, Schukinsky proezd l1, kv. 6, Moscow; Jury Nikolaevich Baulin, ulitsa Parkovaya, 5, kv. 120, Balashikha Moskovskoi oblasti, USSR. [21] Appl. No. 746,092 [22] Filed July 19, 1968 [45] Patented May 11,1971

[54] FLUID-FLOW PUMP 3 Claims, 3 Drawing [52] 11.8. Cl 210/416, 103/103 [51} Int. Cl B0ld 35/26 [50] Field of Search 210/416; 103/103 Primary Examiner-John Adee Att0rney-Waters, Roditi, Schwartz & Nissen ABSTRACT: A pump comprises a pulsation chamber from which liquid is ejected through a nozzle apparatus into a discharge chamber and a discharge pipe. A fluid inlet pipe opens into the discharge chamber beneath the noule apparatus and coaxially therewith to supply liquid under suction pressurelThe nozzles of the nozzle apparatus are placed tangentially so that the liquid from the pulsation chamber moves with rotary motion from a center to the periphery. The pump is used in a filter apparatus by placing the pump in a body containing a filter element, the body forming the discharge chamber and the discharge pipe.

FLUID-FLOW PUMP This present invention relates to apparatus for pumping fluids and, more particularly, to fluid-flow pumps and to filters used in conjunction with these pumps.

The present invention may be used most successfully when conveying toxic fluids, in case servicing the equipment is hampered.

Known at present are fluid-flow pumps in which fluid, coming from a suction pipe, is conveyed into a discharge chamber by being ejected from a nozzle apparatus in the course of reciprocation of said fluid in a pulsation chamber communicated with said nozzle apparatus.

The these known pumps the nozzle apparatus communicating with the pulsation chamber comprises ejection nozzles, while the discharge chamber is fashioned as the ejector mixing chambers arranged coaxially with the ejection nozzles.

The efficiency of such known pumps depends upon strict observance of the coaxial alignment of the ejection nozzles with the mixing chambers and upon the accuracy of preserving the ratio of their diameters, which increases the costs of manufacturing the pump Also a disadvantage of the known pump is that, when transporting suspensions, an insignificant wear of the ejection nozzle brings about a considerable decrease in the pumping efficiency due to the variation of the ratio between the diameters of said nozzle and the discharge chamber. As a result of this, as well as due to the pulsation nature of the flow of fluid supplied to the ejection nozzle, the efficiency of the known pump is low.

It is an object of the present invention to provide a fluidflow pump that has stable characteristics and is but negligibly dependent upon the degree of wear of the nozzle apparatus.

It is an important object of the invention to provide a fluidflow pump of higher efficiency as compared to the known pumps.

Still another object of the present invention is to provide a pump of a simple design.

The above and other objects of the present invention are accomplished by the employment of a pump for pumping fluid conveyed from a suction pipe into a discharge chamber by ejecting it from a nozzle apparatus in the course of reciprocation of said fluid in a pulsation chamber, in which pump, according to the invention, the chamber of the nozzle apparatus is formed by a horizontal ring with nozzles and is closed from above. The nozzles are placed tangentially with respect to at least one circumference concentric with said ring, for the purpose of imparting rotary motion to fluid in the chamber of the nozzle apparatus. The discharge chamber is arranged coaxially with the ring, and is shaped in its lower portion as a disc with a diameter exceeding that of said ring, and communicates with the chamber of the nozzle apparatus from its open lower side so that fluid moves in the discharge chamber from the center to the periphery, while'the suction pipe is brought from below to the center of the lower portion of the discharge chamber and is arranged coaxially with the ring, an exhaust pressure pipe being located at the periphery of the discharge chamber.

In a filter used in conjunction with the pump according to the invention, the pump with the pulsation chamber is mounted directly in the filter body under its filtering element, the ring with the nozzles being installed in the lower part of the filter body, while the discharge chamber of the pump is fonned by said body and communicates with the chamber of the nozzle apparatus of the pump with the aid of its discshaped lower portion.

The pump disclosed herein has a higher efficiency, as a result of which its discharge is increased by 1.5 to 2 times, without requiring high accuracy of manufacturing and assembling parts of said pump.

The present invention will be better understood from the following description of an exemplary embodiment thereof, reference being had to the accompanying drawings, wherein:

FIG. 1 is a schematic sectional view of the fluid-flow pump according to the present invention,

FIG. 2 is a section taken on line ll-II in FIG. I; and

FIG. 3 is a diagrammatic elevation view which illustrates the filter used in conjunction with the pump shown in FIG. 1.

. The pump of the present invention comprises a pulsation chamber I (FIG. I) communicating with a chamber 2 of the nozzle apparatus, with a circular channel 3 with a discharge chamber 4, with an exhaust pressure pipe 5, and with a suction pipe 6.

The chamber 2 of the nozzle apparatus of the pump is formed by a horizontal ring 7 (FIG. 2) with nozzles 8 arranged throughout the whole perimeter of the ring tangentially with respect to at least one circumference a concentric with said ring. The ring 7 is closed 'from the side of the pulsation chamber I with a lid 9, and open from the side of the circular channel 3. Such an arrangement of the nozzles provides for a rotary motion of fluid I0 forced periodically out of the pulsation chamber I and for the production of centrifugal the force in the rotating fluid ring fluid flow throughout the whole perimeter of said fluid ring.

The discharge chamber 4 communicating with the chamber 2 of the nozzle apparatus, is arranged coaxially with the ring 7 and is shaped in its lower portion 11 as a disc placed under the ring 7, the diameter of said disc exceeding the diameter of the ring Located at the periphery of the disc is the exhaust pressure pipe 5, while the circular channel 3 passes throughout the whole perimeter of the disc. Such an arrangement of the discharge chamber provides for the flow of fluid therein, as well as along the channel 3, from the center to the periphery. The flow of fluid in the chamber 4 causes the formation of vacuum along the axis of the ring 7, coaxially with which ring the suction pipe 6 communicates. This, as well as the inertness of the moving fluid, increases the efficiency of the pump and the pulsating nature of the motive force.

The pulsation chamber 1 designed for transmitting air pulses to fluid is provided with a union pipe 12 for connection to a pulsator (not shown in the drawings). The chamber 1 is fashioned as a cylinder, however, its cross section may be of any shape, whereas its axis 13 should necessarily be vertical, or substantially vertical.

The position of the nozzle apparatus and circular channel 3 may be either horizontal vertical, or inclined. In the latter case, the nozzles 8 communicate with the pulsation chamber directly or via additional spaces.

When using the pump described hereinabove in a filter for cleaning fluid, the ring 7 having the nozzles 8 (FIG. 3) is installed in the lower part of the filter body 14. Said body forms the discharge chamber and communicates with the chamber 2 of the nozzle apparatus. The nozzle apparatus is placed under the filtering element I5 inclined in the body 14.

The employment of the present pump in the filter increases the effectiveness of the filtration process and provides for a continuous cleaning of the filtering element 15.

The pump according to the present invention operates in the following manner.

All the spaces of the pump are prefilled with liquid. The pulsator is actuated, serving to alternately communicate the pulsation chamber with compressed air and air at atmospheric pressure. I

During the delivery of compressed air into the pulsation chamber 1 the level 16 of fluid therein goes down, and fluid flows out at a great rate through the nozzles 8 of the chamber 2 of the nozzle apparatus. Because of the tangential direction of the nozzles 8, fluid inside the chamber 2 is imparted rotary motion, flows into the circular channel 3 from the center to the periphery under the influence of centrifugal force, whereupon the fluid flows into the discharge chamber 4. Vacuum is formed along the axis of the ring 7, the fluid thereby being sucked into the circular channel 3 from the suction pipe 6, wherein channel 3 the fluid joins the flow already in the channel, whereafter the combined flow enters the discharge chamber 4 and exhaust pressure pipe 5.

After the pulsation stroke, the pulsation chamber 1 is exposed to atmospheric pressure. Fluid from the suction pipe 6 then flow into the pulsation chamber, whereby level 16 returns to the initial position. During this latter stroke, fluid moves by inertia in the same direction as before, gradually diminishing.

The cycle is then repeated.

When employing the pump in the filter, the pump operation is similar to that described hereinabove. the filter is prcfilled with suspension or some other fluid, whereupon the pulsator is actuated. Suspension is delivered via suction pipe 6 into the internal space of the filter body 14, which space coincides with the discharge chamber of the pump and is resisted from above by the filtering element 15. However, the resistance offered by the filtering element brings about an increase of head developed by the pump as a result of which the amplitude of oscillations increases in the discharge chamber 4, and in each pulsation stroke the operation of cleaning the filtering element 15 is insured.

When supplying pressure to the pulsation chamber, the level 16 falls abruptly, while the level 17 (H6. 3) is displaced upwardly past the surface of the inclined filtering element 15, and washes away the sediment left from the preceding stroke.

Cleaned fluid filtered through the filtering element 15 flows down into a union pipe 18, while a new layer of sediment is formed on the lower side of the filtering element.

In the course of the subsequent stroke, the level 16 goes up, while the level 17 descends. As a result, part of the sediment is blown off by air penetrating the pores of the filtering element 15 and the internal space of the filter in the wake of the level 17.

The cycle is then repeated.

We claim:

1. A fluid-flow pump comprising: means defining a pulsation chamber in which is supplied a fluid, means for reciprocating said fluid in said pulsation chamber; a ring supported in said pulsation chamber and provided with channels, said ring being annular and having an inner and outer circumference, said channels being circumferentially spaced along the outer circumference of the ring and tangentially disposed with respect to said inner circumference, the tangential disposal of said channels imparting rotary motion to fluid in an internal chamber of said ring defined by said inner circumference; a discharge chamber to which fluid is conveyed by said channels, said discharge chamber being arranged coaxially with said ring, and shaped in its lower portion as a disc having a diameter exceeding that of said outer circumference of said ring and communicating with the internal chamber of said ring from its open lower side so that fluid moves in the discharge chamber in a radial direction outwardly; a suction pipe communicating with the center of the lower portion of said discharge chamber and arranged coaxially with said ring; and a discharge pressure pipe located at the periphery of said discharge chamber.

2. A filter for cleaning fluids, comprising: a body; a filtering element inclined inside said body; a pulsation chamber, wherein fluid performs reciprocating motion; a nozzle apparatus accommodated in the lower portion of said pulsation chamber; a horizontal ring with nozzles, which ring is installed in the lower portion of said nozzle apparatus under said filtering element and forms the chamber of said nozzle apparatus, said nozzles being arranged along the whole perimeter of the ring tangentially with respect to at least one circumference concentric with said ring for imparting rotary motion to fluid in the chamber of said nozzle apparatus; said body forming a discharge chamber; said discharge chamber being shaped in its lower portion as a disc via which it communicates with the chamber of the nozzle apparatus; and a suction pipe arranged coaxially with said ring for the delivery of fluid into said body of the filter. I

3. A pump as claimed in claim 1 in combination with a filtering element, said filtering element being supported in inclined position above said ring with channels and extending into said discharge chamber ahead of the discharge pressure pipe. 

1. A fluid-flow pump comprising: means defining a pulsation chamber in which is supplied a fluid, means for reciprocating said fluid in said pulsation chamber; a ring supported in said pulsation chamber and provided with channels, said ring being annular and having an inner and outer circumference, said channels being circumferentially spaced along the outer circumference of the ring and tangentially disposed with respect to said inner circumference, the tangential disposal of said channels imparting rotary motion to fluid in an internal chamber of said ring defined by said inner circumference; a discharge chamber to which flUid is conveyed by said channels, said discharge chamber being arranged coaxially with said ring, and shaped in its lower portion as a disc having a diameter exceeding that of said outer circumference of said ring and communicating with the internal chamber of said ring from its open lower side so that fluid moves in the discharge chamber in a radial direction outwardly; a suction pipe communicating with the center of the lower portion of said discharge chamber and arranged coaxially with said ring; and a discharge pressure pipe located at the periphery of said discharge chamber.
 2. A filter for cleaning fluids, comprising: a body; a filtering element inclined inside said body; a pulsation chamber, wherein fluid performs reciprocating motion; a nozzle apparatus accommodated in the lower portion of said pulsation chamber; a horizontal ring with nozzles, which ring is installed in the lower portion of said nozzle apparatus under said filtering element and forms the chamber of said nozzle apparatus, said nozzles being arranged along the whole perimeter of the ring tangentially with respect to at least one circumference concentric with said ring for imparting rotary motion to fluid in the chamber of said nozzle apparatus; said body forming a discharge chamber; said discharge chamber being shaped in its lower portion as a disc via which it communicates with the chamber of the nozzle apparatus; and a suction pipe arranged coaxially with said ring for the delivery of fluid into said body of the filter.
 3. A pump as claimed in claim 1 in combination with a filtering element, said filtering element being supported in inclined position above said ring with channels and extending into said discharge chamber ahead of the discharge pressure pipe. 